Japanese website IT Media is reporting they received a statement from Nintendo regarding the rumor:
“This is not an official statement from our company,” said the Nintendo representative. “Production on the Wii U is set to continue through next quarter, and afterwards.”
The report states that Nintendo has already ceased production of certain Wii U accessories, saying that the unannounced plans confirm the Wii U itself to be discontinued.
The report also states a release for their codenamed NX console successor is not confirmed for this year.
Nintendo is set to reveal the NX console sometime this year. The company recently launched their first smartphone app, Miitomo, which you can read more about here.